What is the Heart? Where is the Heart Located in the Human Body?
The human heart is a skillful organ that supports the entire body. The heart is a muscle located in the chest that is about the size of a closed fist and slightly off-center, to the left. Every day, the heart beats about 100,000 times, pumping 8 pints of blood throughout the body. Deoxygenated blood is delivered by the heart to the lungs, where it picks up oxygen (O2) and releases carbon dioxide (CO2), a waste product of metabolism. Therefore, the main function is to circulate blood throughout your body.
The circulatory system is made up of the heart, blood, and blood vessels, including arteries, capillaries, and veins.